TY - CHAP A1 - Qamhiyeh, Sima A1 - Khouya, A. A1 - Zylka, Waldemar A1 - Stuschke, M. A1 - Pöttgen, C. T1 - Vergleich der interfraktionellen Variation der Zwerchfell-Position im atemgetriggerten CBCT mit dem Planungs-4D-CT als Basis für das Atemcoaching und für die Dosisakkumulation T2 - Strahlentherapie und Onkologie. Journal of radiation oncology, biology, physics Y1 - 2021 U6 - https://doi.org/10.1007/s00066-021-01791-4 SN - 0179-7158 VL - 197 IS - Supplement 1 SP - S39 EP - S40 ER - TY - CHAP A1 - Ese, Zehra A1 - Qamhiyeh, Sima A1 - Kreutner, Jakob A1 - Schaefers, Gregor A1 - Erni, Daniel A1 - Zylka, Waldemar T1 - Erweiterte CT Hounsfield Werte Skala als eine Methode zu Verbesserung der Strahlentherapie für Patienten mit aktiven und metallischen Implantaten T2 - Konferenz: 49. Jahrestagung der DGMP und 21. Jahrestagung der Deutschen Sektion der ISMRM, 19.-22. September 2018 in Nürnberg Y1 - 2018 ER - TY - CHAP A1 - Ese, Zehra A1 - Tuma, Lara A1 - Qamhiyeh, Sima A1 - Kreutner, Jakob A1 - Schaefers, Gregor A1 - Erni, Daniel A1 - Zylka, Waldemar T1 - Extended CT Hounsfield values scale as a method to improve radiotherapy for patients with active and metallic implants T2 - Biomedical engineering = Biomedizinische Technik. Joint journal of the German Society for Biomedical Engineering in VDE and the Austrian and Swiss Societies for Biomedical Engineering Y1 - 2018 U6 - https://doi.org/10.1515/bmt-2018-6051 SN - 0013-5585 VL - 63 IS - S1 SP - 303 ER - TY - CHAP A1 - Ese, Zehra A1 - Qamhiyeh, Sima A1 - Kreutner, Jakob A1 - Schaefers, Gregor A1 - Erni, Daniel A1 - Zylka, Waldemar ED - Lhotska, Lenka ED - Sukupova, Lucie ED - Lacković, Igor ED - Ibbott, Geoffrey S. T1 - CT Extended Hounsfield Unit Range in Radiotherapy Treatment Planning for Patients with Implantable Medical Devices T2 - World Congress on Medical Physics and Biomedical Engineering 2018. June 3-8, 2018, Prague, Czech Republic (Vol.3) N2 - Radiotherapy (RT) treatment planning is based on computed tomography (CT) images and traditionally uses the conventional Hounsfield unit (CHU) range. This HU range is suited for human tissue but inappropriate for metallic materials. To guarantee safety of patient carrying implants precise HU quantification is beneficial for accurate dose calculations in planning software. Some modern CT systems offer an extended HU range (EHU). This study focuses the suitability of these two HU ranges for the quantification of metallic components of active implantable medical devices (AIMD). CT acquisitions of various metallic and non-metallic materials aligned in a water phantom were investigated. From our acquisitions we calculated that materials with mass-density ρ > 3.0 g/cm3 cannot be represented in the CHU range. For these materials the EHU range could be used for accurate HU quantification. Since the EHU range does not effect the HU values for materials ρ < 3.0 g/cm3, it can be used as a standard for RT treatment planning for patient with and without implants. Y1 - 2018 SN - 978-981-10-9022-6 U6 - https://doi.org/10.1007/978-981-10-9023-3_111 SP - 599 EP - 603 PB - Springer CY - Singapore ER -